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using System;
using System.Linq;
using XenAdmin.Actions.VMActions;
using XenAdmin.Controls;
using XenAPI;


namespace XenAdmin.Dialogs.VMDialogs
{
    public partial class MoveVMDialog : XenDialogBase
    {
        private VM vm;

        public MoveVMDialog(VM vm)
        {
            InitializeComponent();
            this.vm = vm;
        }

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
            Host affinity = vm.Home();

            var vdis = (from VBD vbd in vm.Connection.ResolveAll(vm.VBDs)
                where vbd.GetIsOwner()
                let vdi = vm.Connection.Resolve(vbd.VDI)
                where vdi != null
                select vdi).ToArray();

            EnableMoveButton();
            srPicker1.PopulateAsync(SrPicker.SRPickerType.MoveOrCopy, vm.Connection,
                affinity, null, vdis, vm.TotalVMSize());
        }

        private void EnableMoveButton()
        {
            buttonMove.Enabled = srPicker1.SR != null;
        }

        #region Control event handlers

        private void srPicker1_DoubleClickOnRow(object sender, EventArgs e)
        {
            if (buttonMove.Enabled)
                buttonMove.PerformClick();
        }

        private void buttonMove_Click(object sender, EventArgs e)
        {
            var action = new VMMoveAction(vm, srPicker1.SR, vm.GetStorageHost(false), vm.Name());
            action.RunAsync();
            Close();
        }

        private void srPicker1_SelectedIndexChanged(object sender, EventArgs e)
        {
            EnableMoveButton();
        }

        private void buttonCancel_Click(object sender, EventArgs e)
        {
            Close();
        }

        #endregion
    }
}
